Bolster casing



Aug. 12,1924. V 1,504,812

' H. G. CARLSON BoLsTEn cAsING Fi'ied Feb. 9. 192s Patented Aug. 12, 1924.

UNITED STATES matera PATENT oFFica.

HJALMAR G. CARLSON, OF VJORCESTER, MASSACHUSETTS, ASSIGNOR- TO ROCKWOOD SPRINKLER COMPANY F MASSACHUSETTS, OF WORCESTER, MASSACHUSETTS, A

CORPORATION OF MASSACHUSETTS.

BOLSTER CASING.

Application filed February 9, 1923.

To all whom t may concern.

Be it known that I, I-IJALMAR Cr. CARLSON, a citizen of the United States, residing at lorcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Bolster Casing, of which the following is a specification.

This invention`relates to al bolster casing for a spinning spindle.

The principal objects of the invention are to provide a construction of bolster casing which can be made mainly out of sheet metal either in one or two pieces and to provide an improved form of doffer guard therefor.

Reference is to be had to the accompanying drawings, in which Fig. 1 is a side view, partly in section, of a bolster casing constructed in accordance with this invention;

Fig. 2 is horizontal sectional view on the line 2 2 of Fig. 1;

Fig. 3 is a view similar to Fig. 1 showing the doffer guard in position and the spindle applied;

Fig. 4 is a plan of the same;

Fig. 5 is a sectional view of a modified form;

Fig. 6 is a pla-n of the same partly in section on the line 6 6 of Fig. 5;.

Fig. 7 is a view similar to Fig. showing another modification, and

`F ig. 8 is a plan of the doffer guard shown in Fig. 7.

Referring to the first four figures, it will be see'n that I have shown a bolster casing having a'bottom portion 10 closed atthe bottom and an upper portion 11 open at the top, these two being substantially of the same external and also internal diameter. Between them there is an intermediate portion 13 of larger diameter and of thicker metal. These are all formed of a. single piece of sheet metal by pressing in dies and an integral key 14 is provided in the upper portion 11 also by die pressing operations.

I have also formed an integral cup 15 for oil. This has two walls, an outer wall 16 and an inner wall 17 integral respectively with the intermediate portion 13 and the upper portion 11 and with each other. They form a substantially circular propection on the bolster casing but the regularity of this circle is interrupted by an integral projec- Seral No. 618,147.

tion 18 at one side. The cup 15 will receive oil applied intentionally and also oil that accidentally flows over the open top of the bolster casing on account of the rapid rotation of the spindle and conduct it through a perforation 19 into the enlarged space in the intermediate portion 13 to oil the spindle.

The projection 18 is made for the purpose of supporting a three-sided sheet metal piece 2O which constitutes a support for the dolfer guard 21 which is also formed of sheet metal. This doffer guard performs the usual func tions and is pvoted to the top of this support on a pivot pin 22. The support 20 is fixed to the opposite sides of the projection 18 by a rivet or studs 23.

In the form shown in Figs. 5 and 6 instead of making the entire device of a single piece of sheet metal, I reduce the complication of manufacture of dies. To do this I form the lower part the same shape as the parts 10 and 13, both of one piece of sheet metal terminating in an upwardly extending wall 31 which preferably is substantially circular except for a projection 32.

I set into this section another piece of sheet metal having an open part above the part 33 and a reversely up-turned bottom 34 of circular shape and provided with a perforation 35 directly from the inside of the cup. Below the cup is also a space or perforation 36 which communicates with another opening 37, the use of which will be obvious. This projection 32 is in this case provided with members 20, 21 and 22 above described. In order to fix the two Vparts 30 and 33 together the latter is placed accurately in position and the extreme upper edge of the wall 31 is spun over into engagement with the convex edge of the cup 34. This firmly fixes the two parts together so that they constitute to all intents and purposes a single structure.

Certain other modifications are shown in Figs. 7 and 8. Here the lower part 30-31 is the same as shown in Fig. 5 but the upper part, although in a separate piece, is made differently.y It has the portion 43 like the part 33 but at the bottom it has a flat horizontal wall 44 and a downwardly extending cylindrical wall 45 which is inserted inside the wall 31 to provide for introducing a VVtube 47.

This is an oilr tube capable or conducting the oil into the-bearing surfaces inside.YV This is made use of for providing a dotfer guard 48 pivoted at I9 to the top of the'V tube and acting otherwise the'same as the kdotfer guard 21. j

In each of these forms the bolster casing is made with an offset to provide in one way or another for supporting the doffer guard, and in Figs. 5 and 7 for an oil passage. Then made in two parts the two pieces of sheet metal are firmly united and vconstitute to all intents and purposes a single structure. They can be made by comparatively simple dies whereas inthe form shown injthe first four igu'res a more elaborate .Y set of dies has Vto be provided. This con- `stitutes a simlple way to manufact-ure a bolster casing all or sheet metal and'satisty all the requirements of the articles.

` Although I have illustrated and described Vonly three Yterms of the invention I am aware of the ractthat other moditications canbe made thereinby any person skilled y in the art Vwithout departing from the scope or the invention as expressed in the claims. Therefore, I do not wish to be limited to, all the details of construction herein shown and described'but-vwhat I do claim is v'1.' As an article' of manufacture, a. spinning spindle bolster casingv comprising a hollow body formed or sheet metal `closed at the bottom and open atthetop having a cylindricalportion atY each extreme end, and

v :a larger intermediate portion between themA formed from the sheet inet-al and having anl integral sheet metal oil receiving and conducting enlargement around the casing Vat the junction of the intermediate portion and the open end portionprovided with a radialprojection having a passage therein for conducting oil. c

QQYAsan article of manufacture, a spin- `V ning 'spindleA bolster casing comprising a hollow body formed orsheel metal having a cylindrical portion at each eXtreme'l end, and a larger intermediate portion between them formed from sheet metal and having a circular oil conducting,enlargement surrounding the casing at the top of said intermediate portion. and formed of `two thickc nesses of the sheet metal, the outer one having a hollow radial projection integral with the enlargement, communicating with the interior of the casing to conduct oil thereto.

3. As an article of manufacture, a` spinning spindle bolster casing formed of sheet metal and having a bottom closed end, a top open end, an intermediate portion between them having a larger interior diameter and provided with an integral enlargement at a point adjacent to the top ot said enlarged intermediate portion and oiE cup shape extending upwardly and adapted to receive any oil discharged over the top oi? the o )en end and provided with an integral projection at one side, and a support carried by said projection.

4. As an article oi' manufacture, a spinning spindle bolster easing lormed of sheet metal and having a bottom closed end, a top open end, an intermediate portion between them having a larger internal diameter and provided with an integral cylindrical enlargement surrounding the bolster casing at a point adjacent to the top oit said enlarged intermediate portion and adapted to receive any oil discharged over the top o'l the open end, and provided with a radial projection having an oil passage through the wall of the sheet metal at the bottom of said cup to discharge the oil into the enlarged portion below, a sheet metal member fixed on said projection and extending upwardly therefrom, and a lever pivoted to the upper end of said sheet metal member.

5. As an article of manufacture, a spinning spindle bolster casing comprising a hollow body having the lower end closed, and an intermediate portion having a larger internal diameter integrally connected and provided at a point distant from the top with an outwardly extending wall integrally connected with the top of said intermediate portion,*said wall extending upwardly at the exterior to form an outer cupshaped wall and an upper open ended sheet metal portion having a lower part Afitting within, and held by, the cup-shaped wall to form an annular space around the bolster casing to receive oil.

In testimony whereofl I have hereunto atfiXed my signature.

HJALMAR G. cAaLsoN. 

